12
3 Operation
Then the opening screen for the selected application appears
Fig. 4: Opening screen for In-
spection above ground
application
Display:
– Gas type: H
2
–
Application as symbol (top left)
and text:
Inspection above ground
– Measuring range:
0.0 ppm – 5 % vol.
– Alarm threshold:
ALPPM
0.5 ppm
– Symbol for next application that
can be selected via function
key F3: Measuring in bar holes
The device switches to measuring mode. The device warms
up. The reading flashes.
While the device is warming up, the prompt
Add fresh air!
is
displayed as a reminder.
2. Make sure the device is actually drawing in fresh air. Change
its location if necessary.
3.
Wait until the reading stops flashing.
The device is ready for use.
Fig. 5: Inspection above ground
measuring mode
Display:
– Current reading: zero when
device is switched on with fresh
air